I have been using the file modification check setting:
"skip existing files on levels higher than"
for a project downloading files such as:
without problem using OE 4.0.2272.
I updated to OE 4.0.2298 but found it redownloaded previously downloaded files.
I have reverted to OE 4.0.2272 and that works fine again.
Looks like a bug in the most recent version.
I will check the new version when released and let you know.
Today and tomorrow I have a large project to download. I will get back to you if there are problems.